diff options
| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2020-06-20 13:17:21 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2020-06-20 13:28:52 +0200 |
| commit | af9f471b500bcd0c1023259c7577e074fe6d3ee5 (patch) | |
| tree | 70e08c32ea2b78f1ac8fad4f512ed927d6dd9a2b | |
| parent | 204a382c7b6ccc6443a81688066319d73ef65cab (diff) | |
vm_map: Allow passing the name of a memory object
as is returned by vm_info.
* vm/vm_user.c (vm_map): Before trying to vm_object_enter, try to simply
lookup the name.
| -rw-r--r-- | vm/vm_user.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/vm/vm_user.c b/vm/vm_user.c index 92b1e494..f6fb1a41 100644 --- a/vm/vm_user.c +++ b/vm/vm_user.c @@ -345,14 +345,16 @@ kern_return_t vm_map( object = VM_OBJECT_NULL; offset = 0; copy = FALSE; - } else if ((object = vm_object_enter(memory_object, size, FALSE)) - == VM_OBJECT_NULL) + } else if ((object = vm_object_lookup_name (memory_object)) == VM_OBJECT_NULL && + (object = vm_object_enter(memory_object, size, FALSE)) == VM_OBJECT_NULL) { ipc_port_t real_memobj; vm_prot_t prot; + result = memory_object_proxy_lookup (memory_object, &real_memobj, &prot); if (result != KERN_SUCCESS) + /* Really no luck */ return result; /* Reduce the allowed access to the memory object. */ |